Troubleshooting

Troubleshooting & Maintenance

Lexicon

The MC-12 does not power on.

1.Make sure the rear panel power switch is set to the I (“on”) position.

2.Attempt to power on the MC-12 with the front panel Standby button and remote control On button.

3.Examine the power cord to ensure a good connection between the rear panel AC input connector and the wall outlet.

4.Check the electrical circuit and breaker.

The remote control does not work.

1.Eliminate obstructions between the remote control and the front panel IR receiver. When the MC-12 is not using the rear panel IR IN connector, the remote control must be in line-of-sight with the front panel IR receiver for proper opera- tion. The remote control might also become unreliable if strong sunlight or fluorescent light is shining on the IR receiver.

2.Make sure the remote control batteries are correctly inserted with the proper polarity.

3.Replace the remote control batteries. When the batteries are low on power, the remote control enters a low-voltage condi- tion that prevents it from operating the MC-12.

The MC-12 is powered on, but there is no audio.

1.Examine the audio cables to ensure a good connection between the MC-12 and all associated power amplifiers.

2.Make sure volume level is audible. Volume level can be increased with the front panel volume knob or the remote con- trol VOL + and – buttons.

3.Make sure audio has not been muted. The message “MUTE ON” or “FULL MUTE ON” will appear in the on-screen and front panel displays when audio has been muted. To deactivate mute, press the Mute button or adjust the volume level.

4.Check the INPUT SETUP menu DIGITAL IN and ANALOG IN parameters to ensure the appropriate audio connector is assigned to the selected input.

5.Make sure the MC-12 is receiving an audio signal. To do this, follow the instructions that begin on page 2-20to open the STATUS menu for the current input source.

6.Make sure all associated power amplifiers are powered on.

Dialog sounds muffled.

If the speaker setup does not include a center speaker, make sure a custom – as opposed to a THX – speaker setup is selected. Then, make sure the CUSTOM SETUP menu CENTER parameter is set to NONE.

A humming sound is present in the audio.

1.If a cable TV connection is present, disconnect the cable from the wall outlet. If this eliminates the humming sound, a ground loop isolation device is required. Contact your dealer or the cable provider for assistance.

2.Disconnect components one at a time to isolate the problem. Once the problem is identified, make sure the associated com- ponent is properly grounded and connected to the same elec- trical circuit as the MC-12.

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MC-12 specifications

The Lexicon MC-12 is a high-end home theater processor that has garnered admiration for its impressive performance and advanced features. Designed for audiophiles and home theater enthusiasts, the MC-12 combines cutting-edge technologies with user-centric design to create an unparalleled listening experience.

One of the standout features of the MC-12 is its analog bypass mode, which allows pure analog signals to pass through without digital processing. This feature is particularly appealing to users who prefer the warmth and richness of analog sound. The processor also boasts a 24-bit/192 kHz digital-to-analog converter (DAC), ensuring that audio playback is both high-fidelity and precise.

Equipped with a range of surround sound formats, including Dolby Digital, DTS, and THX, the MC-12 provides an immersive audio experience. It supports multiple channels, delivering up to 7.1 surround sound, making it ideal for cinema-style setups. The processor also features Lexicon's proprietary Logic 7 processing, which enhances stereo and discrete surround signals for a more enveloping soundstage.

The MC-12 features customizable room acoustic settings that allow users to tailor the audio output to their specific environment. An integrated automatic calibration system uses sophisticated algorithms to analyze room acoustics and adjust speaker settings accordingly. This optimization ensures that users achieve the best possible sound quality, regardless of their room’s dimensions or layout.

Connectivity is another strong point of the MC-12. It comes with multiple inputs, including HDMI, coaxial, optical, and balanced inputs, allowing users to connect a variety of audio and video sources. Additionally, the processor includes both analog and digital outputs, ensuring compatibility with a multitude of external devices.

The Lexicon MC-12 also features a user-friendly interface, allowing for easy navigation and control. Its ergonomic design includes a sleek front panel and a backlit remote control, enhancing the overall user experience.

In summary, the Lexicon MC-12 stands out as a premium choice for audiophiles seeking exceptional sound quality and advanced features. Its combination of analog and digital processing, multiple surround sound formats, room calibration technology, and extensive connectivity options make it a versatile and powerful home theater processor. Whether for casual listening or serious cinephile pursuits, the MC-12 promises to deliver a captivating audio experience.